WB Enabled.
Tried different settings:
Default
The one I have on another linux box with SCST and that shows far better write performance
the one proposed for vsphere in some other post
Write performance is always 3MB/sec
The other linux box with SCST in fileio what are the performance reads and what is it and was this tested on the same system and can we get the hdparm from there logs with this box.
Is the linux box 6bit mode what are the specs....
I believe this might be isolated as I dont have older systems to test with. Can you test with DSS V6 Trial version?
Also look at the dmesg logs to see if we can see anything that could possibly be going on.
The other linux box is my production SAN.
it is newer (E200i controller, SAS 15k disks, 4GB RAM, hdparam is about 130MB/sec) and I cannot use for testing.
It is fileio on an entire partition of a logical RAID5 disk.
I am testing DSS V6 trial (latest build) on an older box to see if its performance is good enough to use in production.
Since write performance with iSCSI is poor, I tested with samba to ensure that my older hardware is ok.